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Driverless is the same old story, and connected cars are just prevailing.

When it comes to driverless must be attached to the car network, in fact, not at all pompous, from the sensor to identify all obstacles to reduce safety accidents to reduce the driving time, reduce fuel consumption, electricity consumption, car network in the driverless industry have brought essential efficacy.

When the car completes V2X (vehicle-to-external exchange of information), integrating driverless role, then the car can instantly and prospectively get the full content of information on the road.

The car can anticipate the situation of the car directly opposite, can understand the front is a green light or signal, can understand whether there are passers-by, so that the car can make early predictions, adjust the driving route to prevent congestion and many road traffic accidents gnss module, and thus also more low-carbon environment.

Naturally, this whole process, whether it is the vehicle condition, real-time road conditions of the immediate submission, or the core data processing methods, the conclusion of timely feedback, must be extremely efficient Internet as a basic support point, and 5G is an indispensable basic.

From the car networking history time Internet development, 2009 China car networking technicality just began to develop, and only to complete the basic navigation bar, rescue and other roles, spacing the United States, Japan, each lagging behind 20, 60 years.

Along with the development of communication technology, in 2013, China's car Internet technology can already complete simple instant communication, real time navigation bar and real-time monitoring system. 2014-2015, 3G and LTE (cellular mobile communication technology) gradually used in vehicle-based communication system to carry out remote operation.

It can be said then that LTE-V is a mobile communication technology tailored for Telematics.

For quite a long time before LTE-V was developed, DSRC (Dedicated Proximity Communication Technology) was a popular Telematics communication technology in China like the United States, and today there are still many countries where it is a popular specification.

However, it should be noted that DSRC is only applicable to long-range communication as opposed to LTE-V's long-range communication. However, for the car network with ms level of delay, the initial LTE-V delay is not comparable to DSRC.

If DSRC is used as the vehicle communication system of Telematics, then it is not the real sense of Telematics.

Along with the development of the fifth generation mobile communication technology, 5G can reach the 1ms low latency regulation, so China's cellular mobile communication technology has developed from C-V2X to 5G-V2X.

However, according to the cellular mobile communication technology system software development of Telematics, the real problem is not only the landing type of vehicle-mounted communication system, but also the development trend of intelligent, networked platform and intelligent system of Telematics, the communication system is only the mid-range (magnetic induction layer) of the Telematics industry chain framework "end + tube + cloud". A part.

And car networking spacing real ground type, but also must link layer and its network layer of perfection.

I. From REL-15 to REL-17

In 2021, China Internet Exchange announced the "China Internet Development Report (2021)" emphasizes that China's Telematics standardized service system is basically complete, and Telematics turns into an independent innovation driving force for the upgrading of the production industry structure of the automobile industry.

In which, the installation rate of Telematics has about three million units, the annual growth rate of sales market has 107%, and the coverage rate has 15%.

In fact, the use of Telematics not only serves the project of assisted driving, advanced driverless and other intelligent networked vehicle applications, but also effectively deals with public transportation high efficiency, urban governance and other systematized trip problems.

Therefore, V2X for Telematics is broadly divided into V2C, V2V, V2P, V2N and V2I.

V2C favors the human-vehicle feeling and has been developed earlier. At this stage, most of the newly produced medium and high-end cars on the market are equipped with V2C technology, while V2V, V2P, V2N and V2I favor safe driving feeling and safe driving and have been developed later.

At this stage, only a small number of high-end brands are equipped with V2V technology, while other technologies are almost invisible to the specific use.

Easy Car Research Institute survey information shows that by the end of 2021, more than 81% of the guaranteed car equipped with multimedia system display, in which the coverage rate of the center console display reached 52.80%, with more than 100 million.

In addition, after all, the production research data shows that in 2021 in the sale of cars equipped with the center console display rate is 96.10%.

But the center console display coverage is only a very small part of the car network, the car network involves not only the car software and hardware, is to include the car network to the microprocessor, and then to the road, people, things, network in the middle of the data exchange platform, and then reach the car network management system.

Undoubtedly, only the car equipped with the center console display, at best only called "intelligent networked car".

Then, in addition to the large screen coverage of the center console, what is the development of the current network of cars?

First of all, from the end (magnetic induction layer) to the middle of the end of the information content communication development seems, in mid-March 2022, 3GPP completed the third version of the worldwide 5G specification Rel-17 versatility freeze clean.

Rel-17 generates a large number of improved features for a variety of fundamental technicalities of the 5G system software, facilitating technical developments at several levels, including volume, coverage, latency, energy rating, and mobility.

In simple terms, the R17 specification guarantees a higher level of V2X services based on lower latency, higher stability, and higher volume of 5GNR compared to the earlier R16 version.

In addition, 5G-V2X to the car network to improve the key to complete the role of driverless, including the car red alert shortcut, high-end safe driving, expansion of the sensor, remote control of safe driving four categories of roles, plus the basic role, a total of 25 applications.

Secondly, the penetration rate of front-loading car networking system software in the new car market is gradually increasing.

According to the data monitoring of the Institute of Intelligent Vehicles of Senior Engineers, the amount of front-installed car networking for new cars in China's sales market from January to June 2021 was 5,527,900 units, and the rate of installation was first raised by 50% to 54.97%.

Along with the rapid increase in the coverage of the intelligent system and electrification of the car, the total renewal and increase of the market capacity according to the different product portfolio strategies such as 4GLTE module, 5G module, C-V2X module, etc. is great.

This represents a significant increase in market competition in the in-vehicle communication module sales market, and due to the automotive sector's own stringent standards for suppliers, it seems that only a few module manufacturers can be selected to guarantee mass production delivery at OEMs in the end.

What is particularly noteworthy is that even when the most important LTE evolution development of Telematics, and its pre-installation market penetration rate seems to have increased, Telematics seems to be in a lukewarm situation since 2009 till now.

Naturally, the car network intelligent system more jack under the security risks, intelligent system throughout the country highway, municipal roads car network basic infrastructure assets, and its intelligent connection network of basic construction use value indicator value is not to achieve the convenience of the people, good governance, the development of banking, business services these are and the development of the car network there is an inevitable correlation.

But from the most pressing root of the car network development, the car is open to the public communication work ability is considered the important issue of the moment.